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Issue #26848: Fix asyncio/subprocess.communicate() to handle empty input.

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This commit is contained in:
Yury Selivanov 2016-05-13 15:35:28 -04:00
parent d76c7c2bed
commit 7657f6ba21
3 changed files with 23 additions and 1 deletions
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19
Lib/test/test_asyncio/test_subprocess.py
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@ -287,6 +287,25 @@ class SubprocessMixin:
self.assertEqual(output.rstrip(), b'3')
self.assertEqual(exitcode, 0)
def test_empty_input(self):
@asyncio.coroutine
def empty_input():
code = 'import sys; data = sys.stdin.read(); print(len(data))'
proc = yield from asyncio.create_subprocess_exec(
sys.executable, '-c', code,
stdin=asyncio.subprocess.PIPE,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
close_fds=False,
loop=self.loop)
stdout, stderr = yield from proc.communicate(b'')
exitcode = yield from proc.wait()
return (stdout, exitcode)
output, exitcode = self.loop.run_until_complete(empty_input())
self.assertEqual(output.rstrip(), b'0')
self.assertEqual(exitcode, 0)
def test_cancel_process_wait(self):
# Issue #23140: cancel Process.wait()